Submarine USS Squalus recovery attempted with aid of pontoons.

United States Navy's Salvage Operation of U.S. Submarine Squalus. USS Wandank with a cable attached to stern and USS Sculpin helps to furnish air. Disturbance in surface of water as first pontoon is blown dry. Stern pontoons seen bobbing on surface. Men seen working on top of pontoons. Bow of Squalus seen. Bow turns over onside and sinks back in water. Animated drawing shows stern of Squalus being lifted from bottom, bow is lifted, stern drops down and sinks back to bottom.